Mash-tub bottom



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MASH TUB BOTTOM.

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UNITED STATES PATENT OEEIcE.

MATHEUS GOTTFRIED, OF CHICAGO, ILLINOIS.

MASH-TUB BOTTOM.

SPECIFICATION forming part of Letters Patent No. 371,261, dated October 11, 1887.

Application filed April 8, 1886. Serial No. 198,171. (No model.)

To all whom it may concern:

Be it known that I, MATHEUS GOTTERIED, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Mash-Tub Bottoms, of which the following is a specification.

In the drawings, Figure 1 is a plan view of the upper or supplemental bottom of the mashtub from above. Fig. 2 is avertical transverse section taken in line or x of Fig. 1. Fig. 3 is a plan view of one of the outer sections of the upper or supplemental bottom of the tub. Fig. 4 is a transverse sectional view of the upper and permanent floors from the center to one side, showing the method of attaching the supplemental to the permanent floor. Fig. 5 is a side elevation of a portion of the center shaft and the flange or plate by which the upper or supplemental floor is held at the center in place; and Fig. 6 is a side elevation of the same With such flange up, as it appears when sections of the upper floor are to be inserted or removed.

A are the sections or plates of the upper, false, or supplemental floor; B, the inner section or plate; 0, the permanent floor of the mash-tub; D, the beams or supports on which the weight of the mash-tub is sustained; E, the center shaft of the mash-tub; G,a collar around the outer center shaft; H, a flange on the same attached to the permanent floor; I, a loose collar around the collar G; J, a flange on the same; K, aslotin the outer collar, I; L, studs attached to the collar Gand extending out through such slots; M, hooks or loops extending upward from the permanent floor; N, a staple or hook extending downward from the outer plates of the supplemental floor; O, a pin or bolt attached to the inner plates of the upper or supplemental floor and thrust through the hooks or staples 0n the permanent floor and on the outer plate of the supplemental floor as the inner section is put in place; P,a flange around the inside of the mash-tub near the bottom, and Q, supporting-studs.

In constructing a mash-tub containing my improved bottom I make the bottom of two floors, one of which is the permanent or under floor and the other of which is the supplemental or upper floor. The permanent floor may be called the bottom and the other the false bottom. The permanent or lower floor may be made of any suitable wood or material that may be desired. It is inclined from the center and from the circumference to a line or circle, preferably a little nearer the outer than the inner edge. This is a matter ofjudgment for the constructer. This depression or hollow preferably extends entirely around the permanent floor of the tub, and is provided at proper intervals with holes connecting with suitable pipes to draw off the malt-extract and convey it to the beer-kettle for boiling. Above this permanent floor I make a second or supplemental floor, which is made of sections and capable of removal with facility to permit of repairs, renewal, and other changes, andparticularly to permit proper cleansing of the tub after use. The sections or plates composing this supplemental floor are bisected, preferably as shown in Fig. 1, into outer and inner plates.

The outer edges of the plates abut against the outer edge of the mash-tub and the inner edges of the inner plates against the collar surrounding the center shaft. The plates are made with extended flanges, as shown in Fig. 3. Part of these flanges underlie and part of them overlie the edges of contiguous plates. This enables them to be interlocked with each other in a secure and ready manner. The outer edges of the outer plates rest under the flange P, as shown in Fig. 2, which prevents them from being removed or displaced in a vertical direction. Their inner ends rest on pins or supports Q, as shown in Figs. 2, 3, and 4. Hooks or staples M rise from the permanent floor and preferably near and under the inner edges of the outer plates. The inner edges of theinner plates pass under the flange J on the collar I, as shown in Figs. 2, 5, and 6, and their outer ends rest on the extending flanges on the inner ends of the outer plates, which plates are supported, as above said, by pins or supports Q. Staples or hooks N depend from theinner edges of the outer plates near .the hooks or staples M in the permanent floor, and so that the holes in these hooks or staples will coincide and permit a bolt or key attached to the under side of the outer edges of the inner plates to be passed through them and fasten the parts securely together as they are laid. The inner ends of the inner plates pass under the flange J ,which is attached to the collar I. This collar is provided with slot-s K, through which pass studs or screws L. By turning the collar I in one direction the flange J is brought firmly down upon the inner ends of the inner plates to hold them securely in position, as shown in Fig. 5. By turning it in the other direction the flange J will be raised to permit the Inner ends of the inner plates to be lifted and removed,which is done by moving such plates in toward the centershafts until the bolt or key is withdrawn from the hooks or staples M and N, when the plates may be lifted out. The outer plates may be lifted out by drawing them inward until their outer edges have passed from under the collar P on the inside of the mash-tub. In this way all of the sections of the supplemental floor can be removed with ease, as may be desired, for cleaning or other purposes.

Some,aud preferably all,of the plates of the upper or supplemental floor are perforated to permit of the malt extract flowing through them into the space between the supplemental and thepermanentfloors, when it may be drawn off through pipes as required. A large hole or opening closed by a door or slide should also be provided, through which the mashed grain could be discharged or removed after it has been made to yield all of its malt-extract. Some of these perforations and this door or gate are shown in Fig. 1.

I am aware of the mash-tub bottoms and the means employed for holding their parts in position shown and described in the patent to James Walker, February 12, 1887; in the patent to Perry G. Gardner, October 4, 1864; in the patent to Michael Riley, November 14, 1865, and in the English patent to James Lawrence of 1852, and do not, therefore, desire to claim the construction described and shown in such patents; but in the construction described and claimed by me the sections composing the floor are cut in two on a circular line between the sides and diametrical center of the tub,and the floor inclines or slopes from the outside and from the center toward this circular line, and the inner ends of the inside sections are held and firmly secured in place by acollar or sleeve around the piece in which the bottom of the upright shaft or standard on which the machinery is supported rests,and which is provided with inclined slots, through which studs or bolts in the piece supporting the upright standard project, so that as the collar is turned in one direction it is raised out of contact with the ends of the inner sections of the floor, and asitis turnedin the otherdirectionitis brought down against them. In these respects, more particularly, my floor differs from those shown in any of the patents above disclaimed.

\Vhat I desire to secure by Letters Patent 1s 1. Ina mash-tub, a false bottom formed from sections of preferably sheet metal cut in two on circular lines between the sides and diametrical center of the tub, and atrue bottom inclined or sloping downwardlyin every direction from its sides and diametrical center to a circular line about halfway therebetween, substantially as described.

2.- In a mash-tub for stirring and distribut ing malt, a collar or sleeve around the piece in which the bottom of the upright shaft or standard on which the machinery is supported rests or through which it passes,provided with inclined slots through which studs or bolts in the piece supporting the upright standard pro ject, whereby said collar or sleeve is raised from contact with the false bottom when turned in one direction and brought against it when turned in the other direction, substantially as described.

MATHEUS GOTTFRIED.

Witnesses:

' A. S. FARE,

EPIIRAIM BANNING. 

